| - Revision: |
$Rev: 1216 $ |
|
| - Report created: |
2025-07-11 18:35:08 |
| WDS: | I977 | WDS ID/Discoverer |
| P: | 274.500 | Orbital period (years) |
| a: | 0.754 | Semi-major axis (arcseconds) |
| i: | 65.8 | Inclination (degrees) |
| Ω: | 102.9 | Longitude of ascending node (degrees) |
| T: | 1968.880 | Epoch of periastron passage (year) |
| e: | 0.364 | Eccentricity |
| ω: | 29.7 | Longitude of periastron (degrees) |
| Start-Year: | 1888.0 | Year |
| End-Year: | 2162.0 | Year |
| Epoch: | 2025.0 | Besselian Epoch |
| Position: | 155541.93-264449.3 | Epoch-2000 right ascension and declination |
| WDS-ID: | 15557-2645 | WDS designation |
| Discoverer Code: | I977 | Discover designation and components |
| ADS number: | 9836 | Aitken Double Star catalog |
| HD number: | 142456 | HD catalog number |
| Hipparcos number: | 78002 | Hipparcos catalog number |
| V1: | 7.99 | Magnitude of the primary |
| V2: | 8.48 | Magnitude of the secondary |
| Equinox: | 2000 | Equinox |
| Date: | 2010 | Date of last observation |
| Orbit grade: | 4 | Orbit grade, ranging from 1 'definitive' to 5 'indeterminate' |
| Flags: | n | Flags |
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Year Sep[“] PA[°] --------------------------------------------- 2025.0 0.661 266.9 ------------------------- 1888.0 0.466 331.3 1889.0 0.457 332.7 1890.0 0.448 334.1 1891.0 0.439 335.5 1892.0 0.430 337.0 1893.0 0.422 338.6 1894.0 0.413 340.2 1895.0 0.405 341.9 1896.0 0.397 343.7 1897.0 0.390 345.5 1898.0 0.382 347.4 1899.0 0.375 349.4 1900.0 0.369 351.5 1901.0 0.362 353.6 1902.0 0.356 355.8 1903.0 0.351 358.1 1904.0 0.345 0.4 1905.0 0.341 2.9 1906.0 0.336 5.3 1907.0 0.333 7.9 1908.0 0.330 10.5 1909.0 0.327 13.1 1910.0 0.325 15.8 1911.0 0.323 18.5 1912.0 0.322 21.3 1913.0 0.322 24.0 1914.0 0.322 26.7 1915.0 0.323 29.5 1916.0 0.325 32.2 1917.0 0.327 34.9 1918.0 0.329 37.5 1919.0 0.332 40.1 1920.0 0.335 42.7 1921.0 0.339 45.2 1922.0 0.344 47.6 1923.0 0.349 50.0 1924.0 0.354 52.3 1925.0 0.359 54.6 1926.0 0.365 56.7 1927.0 0.371 58.8 1928.0 0.377 60.9 1929.0 0.384 62.8 1930.0 0.390 64.7 1931.0 0.397 66.6 1932.0 0.404 68.4 1933.0 0.410 70.1 1934.0 0.417 71.7 1935.0 0.424 73.3 1936.0 0.431 74.9 1937.0 0.437 76.4 1938.0 0.444 77.9 1939.0 0.450 79.3 1940.0 0.456 80.7 1941.0 0.462 82.0 1942.0 0.468 83.4 1943.0 0.473 84.6 1944.0 0.479 85.9 1945.0 0.483 87.1 1946.0 0.488 88.3 1947.0 0.492 89.5 1948.0 0.495 90.7 1949.0 0.498 91.8 1950.0 0.501 93.0 1951.0 0.503 94.1 1952.0 0.504 95.2 1953.0 0.505 96.4 1954.0 0.505 97.5 1955.0 0.505 98.6 1956.0 0.504 99.7 1957.0 0.502 100.8 1958.0 0.499 102.0 1959.0 0.496 103.1 1960.0 0.492 104.3 1961.0 0.488 105.5 1962.0 0.483 106.7 1963.0 0.477 107.9 1964.0 0.470 109.2 1965.0 0.463 110.5 1966.0 0.455 111.9 1967.0 0.446 113.3 1968.0 0.436 114.7 1969.0 0.427 116.2 1970.0 0.416 117.9 1971.0 0.405 119.5 1972.0 0.394 121.3 1973.0 0.382 123.2 1974.0 0.370 125.2 1975.0 0.357 127.4 1976.0 0.345 129.7 1977.0 0.332 132.2 1978.0 0.320 134.9 1979.0 0.307 137.8 1980.0 0.295 140.9 1981.0 0.283 144.3 1982.0 0.272 148.0 1983.0 0.262 152.0 1984.0 0.253 156.3 1985.0 0.244 160.9 1986.0 0.237 165.8 1987.0 0.232 171.0 1988.0 0.228 176.4 1989.0 0.226 181.9 1990.0 0.226 187.5 1991.0 0.227 193.0 1992.0 0.231 198.5 1993.0 0.236 203.7 1994.0 0.242 208.7 1995.0 0.250 213.4 1996.0 0.260 217.8 1997.0 0.270 221.9 1998.0 0.282 225.6 1999.0 0.294 229.0 2000.0 0.307 232.2 2001.0 0.320 235.1 2002.0 0.334 237.8 2003.0 0.349 240.2 2004.0 0.363 242.4 2005.0 0.378 244.5 2006.0 0.393 246.4 2007.0 0.408 248.2 2008.0 0.423 249.9 2009.0 0.438 251.4 2010.0 0.453 252.8 2011.0 0.468 254.2 2012.0 0.483 255.4 2013.0 0.497 256.6 2014.0 0.512 257.7 2015.0 0.527 258.8 2016.0 0.541 259.8 2017.0 0.555 260.7 2018.0 0.569 261.6 2019.0 0.583 262.5 2020.0 0.596 263.3 2021.0 0.610 264.1 2022.0 0.623 264.9 2023.0 0.636 265.6 2024.0 0.649 266.3 2025.0 0.661 266.9 2026.0 0.673 267.6 2027.0 0.685 268.2 2028.0 0.697 268.8 2029.0 0.709 269.4 2030.0 0.720 269.9 2031.0 0.731 270.5 2032.0 0.742 271.0 2033.0 0.752 271.5 2034.0 0.763 272.0 2035.0 0.773 272.5 2036.0 0.782 272.9 2037.0 0.792 273.4 2038.0 0.801 273.9 2039.0 0.810 274.3 2040.0 0.819 274.7 2041.0 0.828 275.1 2042.0 0.836 275.6 2043.0 0.844 276.0 2044.0 0.852 276.4 2045.0 0.860 276.7 2046.0 0.867 277.1 2047.0 0.874 277.5 2048.0 0.881 277.9 2049.0 0.888 278.2 2050.0 0.894 278.6 2051.0 0.900 278.9 2052.0 0.906 279.3 2053.0 0.912 279.6 2054.0 0.917 280.0 2055.0 0.923 280.3 2056.0 0.928 280.6 2057.0 0.932 281.0 2058.0 0.937 281.3 2059.0 0.941 281.6 2060.0 0.945 281.9 2061.0 0.949 282.3 2062.0 0.953 282.6 2063.0 0.956 282.9 2064.0 0.960 283.2 2065.0 0.963 283.5 2066.0 0.965 283.8 2067.0 0.968 284.1 2068.0 0.970 284.4 2069.0 0.973 284.7 2070.0 0.975 285.0 2071.0 0.976 285.3 2072.0 0.978 285.6 2073.0 0.979 285.9 2074.0 0.980 286.2 2075.0 0.981 286.5 2076.0 0.982 286.8 2077.0 0.983 287.1 2078.0 0.983 287.4 2079.0 0.983 287.7 2080.0 0.983 288.0 2081.0 0.983 288.3 2082.0 0.982 288.6 2083.0 0.982 288.9 2084.0 0.981 289.2 2085.0 0.980 289.5 2086.0 0.979 289.8 2087.0 0.977 290.1 2088.0 0.976 290.4 2089.0 0.974 290.7 2090.0 0.972 291.0 2091.0 0.970 291.3 2092.0 0.968 291.6 2093.0 0.965 291.9 2094.0 0.963 292.2 2095.0 0.960 292.5 2096.0 0.957 292.8 2097.0 0.954 293.1 2098.0 0.951 293.4 2099.0 0.947 293.7 2100.0 0.943 294.0 2101.0 0.940 294.4 2102.0 0.936 294.7 2103.0 0.931 295.0 2104.0 0.927 295.3 2105.0 0.923 295.7 2106.0 0.918 296.0 2107.0 0.913 296.4 2108.0 0.908 296.7 2109.0 0.903 297.0 2110.0 0.898 297.4 2111.0 0.893 297.8 2112.0 0.887 298.1 2113.0 0.881 298.5 2114.0 0.875 298.8 2115.0 0.869 299.2 2116.0 0.863 299.6 2117.0 0.857 300.0 2118.0 0.851 300.4 2119.0 0.844 300.8 2120.0 0.837 301.2 2121.0 0.831 301.6 2122.0 0.824 302.0 2123.0 0.816 302.4 2124.0 0.809 302.9 2125.0 0.802 303.3 2126.0 0.794 303.7 2127.0 0.787 304.2 2128.0 0.779 304.7 2129.0 0.771 305.1 2130.0 0.763 305.6 2131.0 0.755 306.1 2132.0 0.747 306.6 2133.0 0.739 307.1 2134.0 0.730 307.7 2135.0 0.722 308.2 2136.0 0.713 308.7 2137.0 0.705 309.3 2138.0 0.696 309.9 2139.0 0.687 310.5 2140.0 0.678 311.1 2141.0 0.669 311.7 2142.0 0.660 312.4 2143.0 0.651 313.0 2144.0 0.642 313.7 2145.0 0.632 314.4 2146.0 0.623 315.1 2147.0 0.614 315.9 2148.0 0.604 316.7 2149.0 0.595 317.4 2150.0 0.585 318.3 2151.0 0.575 319.1 2152.0 0.566 320.0 2153.0 0.556 320.9 2154.0 0.547 321.8 2155.0 0.537 322.8 2156.0 0.528 323.8 2157.0 0.518 324.8 2158.0 0.508 325.9 2159.0 0.499 327.0 2160.0 0.489 328.2 2161.0 0.480 329.4